/* Локальные шрифты */
@import url('fonts.css');

:root {
    /* Цветовая палитра: Графит + Бирюза */
    --primary: #06B6D4;
    --primary-light: #22D3EE;
    --primary-dark: #0891B2;
    --primary-50: rgba(6, 182, 212, 0.05);
    --primary-100: rgba(6, 182, 212, 0.1);
    --primary-200: rgba(6, 182, 212, 0.2);

    --secondary: #374151;
    --secondary-light: #4B5563;
    --secondary-dark: #1F2937;

    --accent: #F97316;
    --accent-light: #FB923C;
    --accent-dark: #EA580C;

    --bg-light: #F9FAFB;
    --bg-white: #FFFFFF;
    --bg-dark: #111827;
    --bg-gray: #F3F4F6;
    
    /* Полупрозрачные фоны для параллакса - увеличена непрозрачность для снижения нагрузки */
    --bg-white-transparent: rgba(255, 255, 255, 0.88);
    --bg-light-transparent: rgba(249, 250, 251, 0.88);

    --text-dark: #1F2937;
    --text-muted: #6B7280;
    --text-light: #9CA3AF;

    --border-color: #E5E7EB;
    --shadow-color: rgba(0, 0, 0, 0.08);

    /* Типографика */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-display: 'Playfair Display', Georgia, serif;

    /* Размеры */
    --container-width: 1280px;
    --border-radius: 16px;
    --border-radius-lg: 24px;
    --border-radius-full: 9999px;

    /* Тени */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --shadow-glow: 0 0 40px rgba(6, 182, 212, 0.4);
    --shadow-accent: 0 0 30px rgba(249, 115, 22, 0.3);

    /* Переходы */
    --transition-fast: 0.15s ease;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* Reset & Base */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-primary);
    color: var(--text-dark);
    background-color: var(--bg-light);
    line-height: 1.7;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Блокировка скролла когда мобильное меню открыто */
body.mobile-menu-open {
    overflow: hidden;
}

body.mobile-menu-open .parallax-wrapper {
    overflow: hidden;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

ul, ol {
    list-style: none;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

/* Container */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: 600;
    line-height: 1.3;
    color: var(--text-dark);
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
}

h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: 1rem;
}

h3 {
    font-size: clamp(1.25rem, 2vw, 1.5rem);
}

p {
    color: var(--text-muted);
    margin-bottom: 1rem;
}

/* Section */
section {
    padding: 100px 0;
    position: relative;
    z-index: 1; /* Над параллакс-фоном */
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 60px;
}

.section-header h2 {
    position: relative;
    display: inline-block;
    margin-bottom: 20px;
}

.section-header h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    border-radius: var(--border-radius-full);
}

.section-header p {
    font-size: 1.125rem;
    color: var(--text-muted);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 16px 32px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--border-radius-full);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: var(--transition-slow);
}

.btn:hover::before {
    left: 100%;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    box-shadow: 0 4px 15px rgba(6, 182, 212, 0.4);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(6, 182, 212, 0.5);
}

.btn-accent {
    background: linear-gradient(135deg, var(--accent), var(--accent-dark));
    color: white;
    box-shadow: 0 4px 15px rgba(249, 115, 22, 0.4);
}

.btn-accent:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(249, 115, 22, 0.5);
}

.btn-outline {
    background: transparent;
    color: var(--primary);
    border: 2px solid var(--primary);
}

.btn-outline:hover {
    background: var(--primary);
    color: white;
    transform: translateY(-3px);
}

.btn-white {
    background: white;
    color: var(--secondary);
    box-shadow: var(--shadow-md);
}

.btn-white:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
    color: var(--primary);
}

.btn-dark {
    background: linear-gradient(135deg, var(--secondary), var(--secondary-dark));
    color: white;
    box-shadow: 0 4px 15px rgba(55, 65, 81, 0.4);
}

.btn-dark:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(55, 65, 81, 0.5);
}

/* ==================== HEADER ==================== */
header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 20px 0;
    transition: var(--transition);
}

header.scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: var(--shadow);
    padding: 15px 0;
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    z-index: 1001;
}

.logo img {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--primary);
    transition: var(--transition);
}

.logo:hover img {
    border-color: var(--accent);
    transform: scale(1.05);
}

.logo-text {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--secondary);
}

.logo-text span {
    color: var(--primary);
}

nav {
    display: flex;
    align-items: center;
    gap: 40px;
}

nav ul {
    display: flex;
    gap: 32px;
}

nav ul li a {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-dark);
    position: relative;
    padding: 8px 0;
}

nav ul li a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    transition: var(--transition);
}

nav ul li a:hover,
nav ul li a.active {
    color: var(--primary);
}

nav ul li a:hover::after,
nav ul li a.active::after {
    width: 100%;
}

.header-cta {
    display: flex;
    align-items: center;
    gap: 20px;
}

.header-cta .btn {
    padding: 12px 24px;
    font-size: 0.9rem;
}

.mobile-menu-btn {
    display: none;
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: var(--primary-100);
    z-index: 1001;
    transition: var(--transition);
    align-items: center;
    justify-content: center;
}

.mobile-menu-btn:hover {
    background: var(--primary-200);
}

/* ==================== BURGER ICON ANIMATION ==================== */
.burger-icon {
    width: 22px;
    height: 16px;
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.burger-line {
    display: block;
    width: 100%;
    height: 2.5px;
    background: linear-gradient(90deg, var(--primary), var(--primary-dark));
    border-radius: 2px;
    transition: all 0.4s cubic-bezier(0.68, -0.6, 0.32, 1.6);
    transform-origin: center;
}

/* Средняя линия */
.burger-line:nth-child(2) {
    width: 70%;
    margin-left: auto;
}

/* Hover эффект на кнопке */
.mobile-menu-btn:hover .burger-line {
    background: linear-gradient(90deg, var(--primary-dark), var(--primary));
}

.mobile-menu-btn:hover .burger-line:nth-child(2) {
    width: 100%;
}

/* ===== Открытое состояние меню ===== */
.mobile-menu-btn.active .burger-line:nth-child(1) {
    transform: translateY(6.75px) rotate(45deg);
}

.mobile-menu-btn.active .burger-line:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}

.mobile-menu-btn.active .burger-line:nth-child(3) {
    transform: translateY(-6.75px) rotate(-45deg);
}

/* Hover на открытом меню */
.mobile-menu-btn.active:hover .burger-line:nth-child(1) {
    transform: translateY(6.75px) rotate(135deg);
}

.mobile-menu-btn.active:hover .burger-line:nth-child(3) {
    transform: translateY(-6.75px) rotate(-135deg);
}

/* ==================== HERO SECTION with Parallax ==================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 140px 0 100px;
    position: relative;
    overflow: hidden;
    background-color: var(--bg-light);
}

/* Параллакс фон с таблицей проверки зрения */
.hero-parallax-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: url('../images/eye-chart-bg.webp');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    background-attachment: fixed;
    opacity: 0.08;
    z-index: 0;
    transform: translateZ(0);
    will-change: transform;
}

/* Градиентный оверлей для параллакса */
.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(
        135deg,
        rgba(249, 250, 251, 0.95) 0%,
        rgba(243, 244, 246, 0.9) 50%,
        rgba(236, 254, 255, 0.85) 100%
    );
    z-index: 1;
}

/* Декоративные элементы */
.hero-decoration {
    position: absolute;
    border-radius: 50%;
    pointer-events: none;
    z-index: 2;
}

.hero-decoration-1 {
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--primary-100) 0%, transparent 70%);
    top: -200px;
    right: -200px;
    animation: float 8s ease-in-out infinite;
}

.hero-decoration-2 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(249, 115, 22, 0.08) 0%, transparent 70%);
    bottom: -100px;
    left: -100px;
    animation: float 10s ease-in-out infinite reverse;
}

.hero-decoration-3 {
    width: 200px;
    height: 200px;
    background: linear-gradient(135deg, var(--primary-200), transparent);
    top: 40%;
    left: 10%;
    animation: float 6s ease-in-out infinite;
}

.hero-shape {
    position: absolute;
    opacity: 0.6;
    pointer-events: none;
    z-index: 2;
}

.hero-shape-1 {
    width: 80px;
    height: 80px;
    border: 3px solid var(--primary);
    border-radius: 20px;
    top: 20%;
    left: 15%;
    animation: rotate-float 12s linear infinite;
}

.hero-shape-2 {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--accent-light), var(--accent));
    border-radius: 50%;
    top: 30%;
    right: 10%;
    animation: pulse-float 8s ease-in-out infinite;
}

.hero-shape-3 {
    width: 40px;
    height: 40px;
    border: 3px solid var(--accent);
    top: 70%;
    right: 20%;
    animation: rotate-float 10s linear infinite reverse;
}

@keyframes float {
    0%, 100% { transform: translateY(0) scale(1); }
    50% { transform: translateY(-30px) scale(1.05); }
}

@keyframes rotate-float {
    0% { transform: rotate(0deg) translateY(0); }
    25% { transform: rotate(90deg) translateY(-15px); }
    50% { transform: rotate(180deg) translateY(0); }
    75% { transform: rotate(270deg) translateY(15px); }
    100% { transform: rotate(360deg) translateY(0); }
}

@keyframes pulse-float {
    0%, 100% { transform: scale(1) translateY(0); opacity: 0.6; }
    50% { transform: scale(1.2) translateY(-20px); opacity: 0.8; }
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
    position: relative;
    z-index: 3;
}

.hero-text {
    max-width: 600px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: linear-gradient(135deg, var(--secondary), var(--secondary-light));
    border-radius: var(--border-radius-full);
    font-size: 0.875rem;
    font-weight: 500;
    color: white;
    margin-bottom: 24px;
    animation: fadeInUp 0.8s ease forwards;
}

.hero-badge i {
    color: var(--primary-light);
}

.hero-text h1 {
    margin-bottom: 16px;
    animation: fadeInUp 0.8s ease 0.1s forwards;
    opacity: 0;
}

.hero-text h1 span {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--secondary);
    font-weight: 500;
    margin-bottom: 24px;
    animation: fadeInUp 0.8s ease 0.2s forwards;
    opacity: 0;
}

.hero-description {
    font-size: 1.125rem;
    line-height: 1.8;
    margin-bottom: 32px;
    animation: fadeInUp 0.8s ease 0.3s forwards;
    opacity: 0;
}

.hero-stats {
    display: flex;
    gap: 40px;
    margin-bottom: 40px;
    animation: fadeInUp 0.8s ease 0.4s forwards;
    opacity: 0;
}

.hero-stat {
    text-align: center;
}

.hero-stat-number {
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
    margin-bottom: 4px;
}

.hero-stat-text {
    font-size: 0.875rem;
    color: var(--text-muted);
    font-weight: 500;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease 0.5s forwards;
    opacity: 0;
}

.hero-image {
    position: relative;
    display: flex;
    justify-content: center;
    animation: fadeInRight 1s ease 0.3s forwards;
    opacity: 0;
}

.hero-image-wrapper {
    position: relative;
    width: 100%;
    max-width: 500px;
}

.hero-image-wrapper::before {
    content: '';
    position: absolute;
    inset: -20px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: 30px;
    transform: rotate(3deg);
    opacity: 0.15;
    z-index: -1;
}

.hero-image-wrapper::after {
    content: '';
    position: absolute;
    inset: -10px;
    border: 3px solid var(--primary);
    border-radius: 25px;
    transform: rotate(-2deg);
    z-index: -1;
}

.hero-image-wrapper img {
    width: 100%;
    border-radius: 20px;
    box-shadow: var(--shadow-xl);
    transition: var(--transition);
}

.hero-image-wrapper:hover img {
    transform: scale(1.02);
}

/* Плавающие карточки возле фото */
.hero-floating-card {
    position: absolute;
    background: white;
    padding: 16px 20px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 12px;
    animation: float 4s ease-in-out infinite;
}

.hero-floating-card-icon {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
}

.hero-floating-card-1 {
    top: 10%;
    right: -30px;
    animation-delay: 0s;
}

.hero-floating-card-1 .hero-floating-card-icon {
    background: linear-gradient(135deg, var(--primary-100), var(--primary-50));
    color: var(--primary);
}

.hero-floating-card-2 {
    bottom: 15%;
    left: -30px;
    animation-delay: 1s;
}

.hero-floating-card-2 .hero-floating-card-icon {
    background: linear-gradient(135deg, rgba(249, 115, 22, 0.2), rgba(249, 115, 22, 0.1));
    color: var(--accent);
}

.hero-floating-card-3 {
    bottom: 10%;
    right: -30px;
    animation-delay: 2s;
}

.hero-floating-card-3 .hero-floating-card-icon {
    background: linear-gradient(135deg, rgba(34, 197, 94, 0.2), rgba(34, 197, 94, 0.1));
    color: #22c55e;
}

.hero-floating-card-text h4 {
    font-family: var(--font-primary);
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 2px;
}

.hero-floating-card-text p {
    font-size: 0.75rem;
    margin: 0;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* ==================== CSS PARALLAX (SCROLL-DRIVEN ANIMATIONS) ==================== */
/* Чистый CSS параллакс через scroll-driven animations - работает на GPU, без JavaScript */

.parallax-wrapper {
    height: 100vh;
    overflow-x: hidden;
    overflow-y: auto;
    position: relative;
    scroll-timeline: --parallax-scroll block; /* Создаём timeline для scroll */
}

.parallax-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    pointer-events: none;
    z-index: 0;
}

.parallax-layer {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 800%; /* Большая высота для распределения букв */
    will-change: transform;
}

/* Дальний слой - самое медленное движение при скролле */
.parallax-layer-back {
    animation: parallax-slow linear both;
    animation-timeline: --parallax-scroll;
}

/* Средний слой - среднее движение */
.parallax-layer-middle {
    animation: parallax-medium linear both;
    animation-timeline: --parallax-scroll;
}

/* Передний слой - самое быстрое движение при скролле */
.parallax-layer-front {
    animation: parallax-fast linear both;
    animation-timeline: --parallax-scroll;
}

/* Keyframes для разных скоростей параллакса */
@keyframes parallax-slow {
    from { transform: translateY(0); }
    to { transform: translateY(-600vh); } /* Медленное движение */
}

@keyframes parallax-medium {
    from { transform: translateY(0); }
    to { transform: translateY(-700vh); } /* Среднее движение */
}

@keyframes parallax-fast {
    from { transform: translateY(0); }
    to { transform: translateY(-750vh); } /* Быстрое движение */
}

/* Буквы таблицы проверки зрения (Сивцева) */
.eye-letter {
    position: absolute;
    font-family: 'Arial', 'Helvetica', sans-serif;
    font-weight: 700;
    line-height: 1;
    user-select: none;
    pointer-events: none;
}

/* Стили для разных слоёв с эффектом глубины */
/* Дальний слой - размытые буквы, имитация дальнего плана */
.parallax-layer-back .eye-letter {
    font-size: clamp(80px, 10vw, 120px);
    color: #0EA5E9;
    opacity: 0.25;
    filter: blur(3px);
    text-shadow: 0 0 30px rgba(14, 165, 233, 0.3);
}

/* Средний слой - умеренный blur */
.parallax-layer-middle .eye-letter {
    font-size: clamp(100px, 12vw, 160px);
    color: #0891B2;
    opacity: 0.35;
    filter: blur(1.5px);
    text-shadow: 0 0 20px rgba(8, 145, 178, 0.4);
}

/* Передний слой - чёткие буквы, ближний план */
.parallax-layer-front .eye-letter {
    font-size: clamp(140px, 18vw, 220px);
    color: #06B6D4;
    opacity: 0.45;
    filter: blur(0);
    text-shadow: 0 0 25px rgba(6, 182, 212, 0.5);
}

/* Весь контент поверх параллакса */
main,
section,
footer {
    position: relative;
    z-index: 1;
}

/* Header остаётся fixed с высоким z-index */

/* Оптимизация для устройств с предпочтением уменьшенного движения */
@media (prefers-reduced-motion: reduce) {
    .parallax-layer {
        animation: none !important;
    }
    .parallax-bg {
        display: none;
    }
}

/* Мобильная оптимизация - отключаем параллакс на мобильных */
@media (max-width: 768px) {
    .parallax-layer {
        animation: none !important;
    }
    .parallax-bg {
        display: none;
    }
}

/* ==================== ABOUT SECTION ==================== */
.about {
    background: rgba(255, 255, 255, 0.65);
    /* Полупрозрачный фон для видимости параллакса */
    position: relative;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 80px;
    align-items: center;
}

.about-image {
    position: relative;
}

.about-image-main {
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-xl);
}

.about-image-badge {
    position: absolute;
    bottom: -20px;
    right: -20px;
    background: linear-gradient(135deg, var(--secondary), var(--secondary-dark));
    color: white;
    padding: 20px 24px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
}

.about-image-badge-number {
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 700;
    line-height: 1;
    color: var(--primary-light);
}

.about-image-badge-text {
    font-size: 0.875rem;
    opacity: 0.9;
}

.about-text h2 {
    margin-bottom: 24px;
}

.about-text h2 span {
    color: var(--primary);
}

.about-description {
    font-size: 1.125rem;
    margin-bottom: 32px;
}

.about-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-bottom: 32px;
}

.about-feature {
    display: flex;
    align-items: flex-start;
    gap: 12px;
}

.about-feature-icon {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--primary-100), var(--primary-50));
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.about-feature-text h4 {
    font-family: var(--font-primary);
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 4px;
}

.about-feature-text p {
    font-size: 0.875rem;
    margin: 0;
}

.about-quote {
    background: linear-gradient(135deg, var(--bg-gray), transparent);
    border-left: 4px solid var(--primary);
    padding: 24px;
    border-radius: 0 var(--border-radius) var(--border-radius) 0;
    margin-bottom: 32px;
}

.about-quote p {
    font-family: var(--font-display);
    font-size: 1.125rem;
    font-style: italic;
    color: var(--text-dark);
    margin: 0;
}

/* ==================== SERVICES SECTION ==================== */
.services {
    background: rgba(249, 250, 251, 0.6);
    /* Полупрозрачный фон для видимости параллакса */
    position: relative;
    overflow: hidden;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.service-card {
    background: rgba(255, 255, 255, 0.95);
    border-radius: var(--border-radius-lg);
    padding: 40px 32px;
    text-align: center;
    transition: var(--transition);
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    transform: scaleX(0);
    transition: var(--transition);
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
    border-color: transparent;
}

.service-card:hover::before {
    transform: scaleX(1);
}

.service-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 24px;
    border-radius: 20px;
    background: linear-gradient(135deg, var(--secondary), var(--secondary-light));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: white;
    transition: var(--transition);
}

.service-card:hover .service-icon {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    transform: scale(1.1) rotate(5deg);
}

.service-card h3 {
    font-family: var(--font-primary);
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 12px;
}

.service-card p {
    font-size: 0.95rem;
    line-height: 1.7;
    margin-bottom: 20px;
}

.service-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--primary);
    font-weight: 600;
    font-size: 0.95rem;
}

.service-link i {
    transition: var(--transition);
}

.service-card:hover .service-link i {
    transform: translateX(5px);
}

/* ==================== EDUCATION TIMELINE ==================== */
.education {
    background: rgba(255, 255, 255, 0.45);
    /* Полупрозрачный фон для максимальной видимости параллакса */
    position: relative;
}

.timeline {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 100%;
    background: linear-gradient(180deg, var(--primary), var(--secondary), var(--primary));
    border-radius: var(--border-radius-full);
}

.timeline-item {
    position: relative;
    width: 50%;
    padding: 0 50px 60px;
}

.timeline-item:nth-child(odd) {
    left: 0;
    text-align: right;
    padding-right: 50px;
    padding-left: 0;
}

.timeline-item:nth-child(even) {
    left: 50%;
    text-align: left;
    padding-left: 50px;
    padding-right: 0;
}

.timeline-dot {
    position: absolute;
    width: 24px;
    height: 24px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    border: 4px solid rgba(255, 255, 255, 0.9);
    border-radius: 50%;
    top: 0;
    box-shadow: 0 0 0 4px rgba(6, 182, 212, 0.2), var(--shadow);
    z-index: 2;
    transition: var(--transition);
}

.timeline-item:nth-child(odd) .timeline-dot {
    right: -12px;
}

.timeline-item:nth-child(even) .timeline-dot {
    left: -12px;
}

.timeline-item:hover .timeline-dot {
    transform: scale(1.3);
    box-shadow: 0 0 0 6px var(--primary-200), var(--shadow-glow);
}

.timeline-content {
    background: rgba(255, 255, 255, 0.85);
    padding: 28px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.timeline-item:hover .timeline-content {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-200);
}

.timeline-date {
    display: inline-block;
    background: linear-gradient(135deg, var(--secondary), var(--secondary-dark));
    color: white;
    padding: 6px 16px;
    border-radius: var(--border-radius-full);
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 16px;
}

.timeline-content h3 {
    font-family: var(--font-primary);
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 8px;
}

.timeline-content h4 {
    font-family: var(--font-primary);
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--primary);
    margin-bottom: 12px;
}

.timeline-content p {
    font-size: 0.9rem;
    margin: 0;
}

/* ==================== SOCIAL SECTION ==================== */
.social {
    background: rgba(249, 250, 251, 0.4);
    /* Полупрозрачный фон для максимальной видимости параллакса */
    position: relative;
    overflow: hidden;
}

.social-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.social-card {
    background: rgba(255, 255, 255, 0.85);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid var(--border-color);
    display: block;
}

.social-card:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: var(--shadow-xl);
}

.social-card-image {
    height: 180px;
    overflow: hidden;
    position: relative;
    background: linear-gradient(135deg, var(--bg-gray), var(--border-color));
}

.social-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.social-card:hover .social-card-image img {
    transform: scale(1.1);
}

.social-card-image::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 50%, rgba(0,0,0,0.3) 100%);
}

.social-card-content {
    padding: 24px;
}

.social-card-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
}

.social-card-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.social-card-icon.telegram {
    background: linear-gradient(135deg, #0088cc, #00a8e6);
    color: white;
}

.social-card-icon.youtube {
    background: linear-gradient(135deg, #ff0000, #cc0000);
    color: white;
}

.social-card-icon.instagram {
    background: linear-gradient(135deg, #f09433, #e6683c, #dc2743, #cc2366, #bc1888);
    color: white;
}

.social-card-icon.vk {
    background: linear-gradient(135deg, #4C75A3, #5d86b4);
    color: white;
}

.social-card-content h3 {
    font-family: var(--font-primary);
    font-size: 1.125rem;
    font-weight: 600;
    margin: 0;
}

.social-card-content p {
    font-size: 0.9rem;
    margin: 0;
}

/* ==================== MEDIA SECTION ==================== */
.media {
    background: rgba(255, 255, 255, 0.45);
    /* Полупрозрачный фон для максимальной видимости параллакса */
    position: relative;
}

.media-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.media-card {
    background: rgba(255, 255, 255, 0.85);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.media-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.media-card-image {
    position: relative;
    height: 220px;
    overflow: hidden;
    background: linear-gradient(135deg, var(--bg-gray), var(--border-color));
}

.media-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.media-card:hover .media-card-image img {
    transform: scale(1.05);
}

.media-card-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 40%, rgba(0,0,0,0.7) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
}

.media-card:hover .media-card-overlay {
    opacity: 1;
}

.media-play-btn {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    transform: scale(0.8);
    transition: var(--transition);
    box-shadow: var(--shadow-glow);
}

.media-card:hover .media-play-btn {
    transform: scale(1);
}

.media-play-btn i {
    margin-left: 4px;
}

.media-card-content {
    padding: 24px;
}

.media-card-content h3 {
    font-family: var(--font-primary);
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 12px;
    line-height: 1.4;
}

.media-card-content p {
    font-size: 0.9rem;
    margin-bottom: 16px;
}

.media-card-date {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.875rem;
    color: var(--text-light);
}

.media-card-date i {
    color: var(--primary);
}

/* ==================== PUBLICATIONS SECTION ==================== */
.publications {
    background: rgba(249, 250, 251, 0.4);
    /* Полупрозрачный фон для максимальной видимости параллакса */
    position: relative;
}

.publications-list {
    max-width: 900px;
    margin: 0 auto;
}

.publication-item {
    display: flex;
    align-items: center;
    gap: 24px;
    padding: 24px;
    background: rgba(255, 255, 255, 0.9);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    margin-bottom: 16px;
    transition: var(--transition);
    text-decoration: none;
    position: relative;
    overflow: hidden;
}

.publication-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background: linear-gradient(180deg, var(--primary), var(--accent));
    transform: scaleY(0);
    transition: var(--transition);
}

.publication-item:hover {
    transform: translateX(8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-200);
    background: white;
}

.publication-item:hover::before {
    transform: scaleY(1);
}

.publication-date {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-width: 70px;
    padding: 12px 16px;
    background: linear-gradient(135deg, var(--secondary), var(--secondary-dark));
    border-radius: var(--border-radius);
    color: white;
    flex-shrink: 0;
    transition: var(--transition);
}

.publication-item:hover .publication-date {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
}

.publication-day {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    line-height: 1;
}

.publication-month {
    font-size: 0.7rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    opacity: 0.9;
    margin-top: 4px;
}

.publication-content {
    flex: 1;
    min-width: 0;
}

.publication-content h3 {
    font-family: var(--font-primary);
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 8px;
    line-height: 1.4;
    transition: var(--transition);
}

.publication-item:hover .publication-content h3 {
    color: var(--primary);
}

.publication-source {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    color: var(--text-muted);
}

.publication-source i {
    color: var(--primary);
    font-size: 0.85rem;
}

.publication-arrow {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--bg-gray);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-light);
    flex-shrink: 0;
    transition: var(--transition);
}

.publication-item:hover .publication-arrow {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    transform: translateX(4px);
}

/* Скрытые публикации */
.publications-hidden {
    display: none;
    opacity: 0;
    max-height: 0;
    overflow: hidden;
    transition: opacity 0.5s ease, max-height 0.5s ease;
}

.publications-hidden.show {
    display: block;
    opacity: 1;
    max-height: 2000px;
}

/* Кнопка "Показать ещё" */
.publications-toggle {
    text-align: center;
    margin-top: 32px;
}

.publications-toggle .btn {
    min-width: 200px;
}

.publications-toggle .toggle-icon {
    transition: var(--transition);
}

.publications-toggle.expanded .toggle-icon {
    transform: rotate(180deg);
}

/* ==================== ACHIEVEMENTS SECTION ==================== */
.achievements {
    background: rgba(255, 255, 255, 0.45);
    /* Полупрозрачный фон для максимальной видимости параллакса */
    position: relative;
}

.achievements-list {
    max-width: 900px;
    margin: 0 auto 60px;
    padding: 40px;
    background: linear-gradient(135deg, rgba(243, 244, 246, 0.75), rgba(249, 250, 251, 0.75));
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-color);
}

.achievements-list li {
    padding: 16px 0 16px 36px;
    position: relative;
    font-size: 1rem;
    color: var(--text-muted);
    border-bottom: 1px solid var(--border-color);
}

.achievements-list li:last-child {
    border-bottom: none;
}

.achievements-list li::before {
    content: '\f058';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    position: absolute;
    left: 0;
    top: 16px;
    color: var(--primary);
    font-size: 1.125rem;
}

.certificates-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
}

.certificate-card {
    position: relative;
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    aspect-ratio: 4/3;
    cursor: pointer;
    box-shadow: var(--shadow);
    transition: var(--transition);
    background: linear-gradient(135deg, rgba(243, 244, 246, 0.85), rgba(229, 231, 235, 0.85));
}

.certificate-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: var(--shadow-xl);
}

.certificate-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.certificate-card:hover img {
    transform: scale(1.1);
}

.certificate-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 30%, rgba(55, 65, 81, 0.9) 100%);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 24px;
    opacity: 0;
    transition: var(--transition);
}

.certificate-card:hover .certificate-overlay {
    opacity: 1;
}

.certificate-overlay h3 {
    color: white;
    font-family: var(--font-primary);
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 4px;
}

.certificate-overlay p {
    color: rgba(255,255,255,0.8);
    font-size: 0.875rem;
    margin-bottom: 12px;
}

.certificate-overlay .btn {
    padding: 10px 20px;
    font-size: 0.85rem;
    align-self: flex-start;
}

/* ==================== CONTACT SECTION ==================== */
.contact {
    background: rgba(249, 250, 251, 0.4);
    /* Полупрозрачный фон для максимальной видимости параллакса */
    position: relative;
    overflow: hidden;
}

.contact-container {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 60px;
}

.contact-container-centered {
    grid-template-columns: 1fr;
    max-width: 600px;
    margin: 0 auto;
}

.contact-info {
    background: rgba(255, 255, 255, 0.85);
    border-radius: var(--border-radius-lg);
    padding: 40px;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
}

.contact-info h3 {
    font-family: var(--font-display);
    font-size: 1.75rem;
    margin-bottom: 32px;
}

.contact-item {
    display: flex;
    gap: 20px;
    margin-bottom: 28px;
}

.contact-item:last-child {
    margin-bottom: 0;
}

.contact-icon {
    width: 56px;
    height: 56px;
    border-radius: 16px;
    background: linear-gradient(135deg, var(--secondary), var(--secondary-light));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    color: white;
    flex-shrink: 0;
    transition: var(--transition);
}

.contact-icon img {
    width: 1.25rem;
    height: 1.25rem;
    object-fit: contain;
    display: block;
}

.contact-item:hover .contact-icon {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    transform: scale(1.1);
}

.contact-text h4 {
    font-family: var(--font-primary);
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.contact-text p {
    font-size: 0.95rem;
    margin: 0;
    line-height: 1.6;
}

.contact-text a {
    color: var(--primary);
}

.contact-text a:hover {
    text-decoration: underline;
}

.contact-social {
    margin-top: 32px;
    padding-top: 32px;
    border-top: 1px solid var(--border-color);
}

.contact-social h4 {
    font-family: var(--font-primary);
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 16px;
}

.contact-social-links {
    display: flex;
    gap: 12px;
}

.contact-social-link {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    color: white;
    transition: var(--transition);
}

.contact-social-link.telegram {
    background: linear-gradient(135deg, #0088cc, #00a8e6);
}

.contact-social-link.instagram {
    background: linear-gradient(135deg, #f09433, #e6683c, #dc2743, #cc2366, #bc1888);
}

.contact-social-link.vk {
    background: linear-gradient(135deg, #4a76a8, #5d8bb3);
}

.contact-social-link.email {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
}

.contact-social-link:hover {
    transform: translateY(-4px) scale(1.1);
    box-shadow: var(--shadow-md);
}

.contact-form {
    background: rgba(255, 255, 255, 0.85);
    border-radius: var(--border-radius-lg);
    padding: 40px;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
    position: relative;
}

.contact-form::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    border-radius: var(--border-radius-lg) var(--border-radius-lg) 0 0;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.form-group {
    margin-bottom: 24px;
    position: relative;
}

.form-group label {
    display: block;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 8px;
}

.form-control {
    width: 100%;
    padding: 16px 20px;
    font-size: 1rem;
    font-family: var(--font-primary);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    background: var(--bg-light);
    transition: var(--transition);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    background: var(--bg-white);
    box-shadow: 0 0 0 4px var(--primary-100);
}

textarea.form-control {
    min-height: 140px;
    resize: vertical;
}

.contact-form .btn {
    width: 100%;
}

/* ==================== FOOTER ==================== */
footer {
    background: linear-gradient(135deg, var(--secondary-dark) 0%, #0f172a 100%);
    color: white;
    padding: 60px 0 30px;
    position: relative;
    z-index: 10; /* Перекрывает параллакс фон */
}

.footer-content {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr;
    gap: 60px;
    margin-bottom: 40px;
}

.footer-brand .logo-text {
    color: white;
    font-size: 1.75rem;
    margin-bottom: 16px;
}

.footer-brand .logo-text span {
    color: var(--primary-light);
}

.footer-brand p {
    color: rgba(255,255,255,0.7);
    font-size: 0.95rem;
    line-height: 1.7;
    max-width: 300px;
}

.footer-links h4,
.footer-social h4 {
    font-family: var(--font-primary);
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 20px;
    color: white;
}

.footer-links ul li {
    margin-bottom: 12px;
}

.footer-links ul li a {
    color: rgba(255,255,255,0.7);
    font-size: 0.95rem;
    transition: var(--transition);
}

.footer-links ul li a:hover {
    color: var(--primary-light);
    padding-left: 8px;
}

.footer-social-links {
    display: flex;
    gap: 12px;
}

.footer-social-link {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: rgba(255,255,255,0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.125rem;
    color: white;
    transition: var(--transition);
}

.footer-social-link:hover {
    background: var(--primary);
    transform: translateY(-4px);
}

.footer-bottom {
    padding-top: 30px;
    border-top: 1px solid rgba(255,255,255,0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
}

.footer-bottom p {
    color: rgba(255,255,255,0.5);
    font-size: 0.875rem;
    margin: 0;
}

.footer-dev {
    font-size: 0.8125rem;
}

.footer-dev a {
    color: rgba(255,255,255,0.6);
    text-decoration: none;
    transition: color 0.2s ease;
}

.footer-dev a:hover {
    color: var(--primary-light, #fff);
}

/* ==================== PLACEHOLDER IMAGES ==================== */
.placeholder-image {
    background: linear-gradient(135deg, var(--bg-gray) 0%, var(--border-color) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-light);
    font-size: 3rem;
}

/* ==================== ANIMATIONS ==================== */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.animate-on-scroll.animated {
    opacity: 1;
    transform: translateY(0);
}

.animate-on-scroll.animate-left {
    transform: translateX(-40px);
}

.animate-on-scroll.animate-left.animated {
    transform: translateX(0);
}

.animate-on-scroll.animate-right {
    transform: translateX(40px);
}

.animate-on-scroll.animate-right.animated {
    transform: translateX(0);
}

.animate-on-scroll.animate-scale {
    transform: scale(0.9);
}

.animate-on-scroll.animate-scale.animated {
    transform: scale(1);
}

/* Staggered animations */
.stagger-1 { transition-delay: 0.1s; }
.stagger-2 { transition-delay: 0.2s; }
.stagger-3 { transition-delay: 0.3s; }
.stagger-4 { transition-delay: 0.4s; }
.stagger-5 { transition-delay: 0.5s; }
.stagger-6 { transition-delay: 0.6s; }

/* ==================== RESPONSIVE ==================== */
@media (max-width: 1200px) {
    .hero-content {
        gap: 60px;
    }

    .footer-content {
        grid-template-columns: 1fr 1fr;
    }
    
    /* Мобильное меню включается на 1200px */
    nav ul {
        display: none;
    }

    .mobile-menu-btn {
        display: flex;
        align-items: center;
        justify-content: center;
    }

    /* Мобильное меню - открытое состояние */
    nav ul.active {
        display: flex;
        flex-direction: column;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        width: 100vw;
        height: 100vh;
        background: var(--bg-white);
        padding: 100px 24px 24px;
        gap: 0;
        z-index: 9998; /* Высокий z-index для отображения поверх всего */
        overflow-y: auto;
    }

    nav ul.active li {
        border-bottom: 1px solid var(--border-color);
    }

    nav ul.active li a {
        display: block;
        padding: 20px 0;
        font-size: 1.125rem;
    }

    .header-cta .btn {
        display: none;
    }
    
    /* Кнопка меню должна быть поверх открытого меню */
    .mobile-menu-btn {
        z-index: 9999;
    }
    
    /* Логотип тоже должен быть виден */
    .logo {
        z-index: 9999;
    }

    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-text {
        max-width: 100%;
    }

    .hero-stats {
        justify-content: center;
    }

    .hero-buttons {
        justify-content: center;
    }

    .hero-image {
        order: -1;
    }

    .hero-image-wrapper {
        max-width: 400px;
    }

    .hero-floating-card {
        display: none;
    }

    .about-content {
        grid-template-columns: 1fr;
    }

    .about-image {
        max-width: 500px;
        margin: 0 auto;
    }

    .contact-container {
        grid-template-columns: 1fr;
    }

    .timeline::before {
        left: 20px;
    }

    .timeline-item {
        width: 100%;
        padding-left: 60px !important;
        padding-right: 0 !important;
        text-align: left !important;
    }

    .timeline-item:nth-child(even) {
        left: 0;
    }

    .timeline-dot {
        left: 8px !important;
        right: auto !important;
    }
}

@media (max-width: 768px) {
    section {
        padding: 80px 0;
    }

    .hero {
        padding: 120px 0 80px;
        min-height: auto;
    }

    .hero-parallax-bg {
        background-attachment: scroll;
    }

    .services::before,
    .contact::before {
        background-attachment: scroll;
    }

    .hero-stats {
        gap: 24px;
    }

    .hero-stat-number {
        font-size: 2rem;
    }

    .about-features {
        grid-template-columns: 1fr;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }

    .services-grid,
    .social-grid,
    .media-grid,
    .certificates-grid {
        grid-template-columns: 1fr;
    }
    
    /* Publications mobile */
    .publication-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
        padding: 20px;
    }
    
    .publication-date {
        flex-direction: row;
        gap: 8px;
        padding: 8px 16px;
        min-width: auto;
    }
    
    .publication-day {
        font-size: 1.25rem;
    }
    
    .publication-month {
        margin-top: 0;
    }
    
    .publication-arrow {
        display: none;
    }
    
    .publication-item:hover {
        transform: translateY(-4px);
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    h1 {
        font-size: 2rem;
    }

    h2 {
        font-size: 1.75rem;
    }

    .btn {
        padding: 14px 24px;
        font-size: 0.9rem;
    }

    .hero-buttons {
        flex-direction: column;
        width: 100%;
    }

    .hero-buttons .btn {
        width: 100%;
    }

    .publications-tabs {
        flex-direction: column;
        align-items: stretch;
    }

    .tab-btn {
        text-align: center;
    }
}

/* ==================== UTILITIES ==================== */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.mb-4 { margin-bottom: 32px; }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mt-4 { margin-top: 32px; }

/* ==================== COOKIE CONSENT BANNER ==================== */
.cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(31, 41, 55, 0.97);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: 20px 24px;
    z-index: 10001;
    transform: translateY(100%);
    opacity: 0;
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.4s ease;
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.15);
}

.cookie-banner.show {
    transform: translateY(0);
    opacity: 1;
}

.cookie-banner.hide {
    transform: translateY(100%);
    opacity: 0;
}

.cookie-banner-content {
    max-width: var(--container-width);
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: 20px;
    flex-wrap: wrap;
}

.cookie-banner-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
    flex-shrink: 0;
}

.cookie-banner-text {
    flex: 1;
    min-width: 250px;
}

.cookie-banner-text p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 0.95rem;
    line-height: 1.6;
    margin: 0;
}

.cookie-banner-text a {
    color: var(--primary-light);
    text-decoration: underline;
    text-underline-offset: 2px;
    transition: var(--transition);
}

.cookie-banner-text a:hover {
    color: white;
}

.cookie-banner-actions {
    display: flex;
    gap: 12px;
    flex-shrink: 0;
}

.cookie-banner-actions .btn {
    padding: 12px 28px;
    font-size: 0.9rem;
    white-space: nowrap;
}

.cookie-accept {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
}

.cookie-accept:hover {
    background: linear-gradient(135deg, var(--primary-light), var(--primary));
}

/* Mobile styles for cookie banner */
@media (max-width: 768px) {
    .cookie-banner {
        padding: 16px;
    }
    
    .cookie-banner-content {
        flex-direction: column;
        text-align: center;
        gap: 16px;
    }
    
    .cookie-banner-icon {
        width: 40px;
        height: 40px;
        font-size: 1.25rem;
    }
    
    .cookie-banner-text {
        min-width: 100%;
    }
    
    .cookie-banner-text p {
        font-size: 0.875rem;
    }
    
    .cookie-banner-actions {
        width: 100%;
        justify-content: center;
    }
    
    .cookie-banner-actions .btn {
        flex: 1;
        max-width: 200px;
    }
}

/* Yandex.Metrika noscript — скрытый пиксель */
.ym-noscript-img {
    position: absolute;
    left: -9999px;
}

/* Позиции букв параллакса (утилиты left/top для .eye-letter) */
.eye-letter.left-3 { left: 3%; }   .eye-letter.left-5 { left: 5%; }   .eye-letter.left-8 { left: 8%; }   .eye-letter.left-10 { left: 10%; }
.eye-letter.left-12 { left: 12%; } .eye-letter.left-15 { left: 15%; } .eye-letter.left-18 { left: 18%; } .eye-letter.left-20 { left: 20%; }
.eye-letter.left-22 { left: 22%; } .eye-letter.left-25 { left: 25%; } .eye-letter.left-28 { left: 28%; } .eye-letter.left-30 { left: 30%; }
.eye-letter.left-32 { left: 32%; } .eye-letter.left-35 { left: 35%; } .eye-letter.left-38 { left: 38%; } .eye-letter.left-40 { left: 40%; }
.eye-letter.left-42 { left: 42%; } .eye-letter.left-45 { left: 45%; } .eye-letter.left-48 { left: 48%; } .eye-letter.left-50 { left: 50%; }
.eye-letter.left-52 { left: 52%; } .eye-letter.left-55 { left: 55%; } .eye-letter.left-58 { left: 58%; } .eye-letter.left-62 { left: 62%; }
.eye-letter.left-65 { left: 65%; } .eye-letter.left-68 { left: 68%; } .eye-letter.left-70 { left: 70%; } .eye-letter.left-72 { left: 72%; }
.eye-letter.left-75 { left: 75%; } .eye-letter.left-78 { left: 78%; } .eye-letter.left-80 { left: 80%; } .eye-letter.left-82 { left: 82%; } .eye-letter.left-85 { left: 85%; }
.eye-letter.left-88 { left: 88%; } .eye-letter.left-90 { left: 90%; } .eye-letter.left-92 { left: 92%; } .eye-letter.left-95 { left: 95%; }

.eye-letter.top-1 { top: 1%; }   .eye-letter.top-2 { top: 2%; }   .eye-letter.top-3 { top: 3%; }   .eye-letter.top-4 { top: 4%; }
.eye-letter.top-5 { top: 5%; }   .eye-letter.top-6 { top: 6%; }   .eye-letter.top-7 { top: 7%; }   .eye-letter.top-8 { top: 8%; }
.eye-letter.top-9 { top: 9%; }   .eye-letter.top-10 { top: 10%; } .eye-letter.top-11 { top: 11%; } .eye-letter.top-12 { top: 12%; }
.eye-letter.top-13 { top: 13%; } .eye-letter.top-14 { top: 14%; } .eye-letter.top-15 { top: 15%; } .eye-letter.top-16 { top: 16%; }
.eye-letter.top-17 { top: 17%; } .eye-letter.top-18 { top: 18%; } .eye-letter.top-19 { top: 19%; } .eye-letter.top-20 { top: 20%; }
.eye-letter.top-21 { top: 21%; } .eye-letter.top-22 { top: 22%; } .eye-letter.top-23 { top: 23%; } .eye-letter.top-24 { top: 24%; }
.eye-letter.top-25 { top: 25%; } .eye-letter.top-26 { top: 26%; } .eye-letter.top-27 { top: 27%; } .eye-letter.top-28 { top: 28%; }
.eye-letter.top-29 { top: 29%; } .eye-letter.top-30 { top: 30%; } .eye-letter.top-31 { top: 31%; } .eye-letter.top-32 { top: 32%; }
.eye-letter.top-33 { top: 33%; } .eye-letter.top-34 { top: 34%; } .eye-letter.top-35 { top: 35%; } .eye-letter.top-36 { top: 36%; }
.eye-letter.top-37 { top: 37%; } .eye-letter.top-38 { top: 38%; } .eye-letter.top-39 { top: 39%; } .eye-letter.top-40 { top: 40%; }
.eye-letter.top-41 { top: 41%; } .eye-letter.top-42 { top: 42%; } .eye-letter.top-43 { top: 43%; } .eye-letter.top-44 { top: 44%; }
.eye-letter.top-45 { top: 45%; } .eye-letter.top-46 { top: 46%; } .eye-letter.top-47 { top: 47%; } .eye-letter.top-48 { top: 48%; }
.eye-letter.top-49 { top: 49%; } .eye-letter.top-50 { top: 50%; } .eye-letter.top-51 { top: 51%; } .eye-letter.top-52 { top: 52%; }
.eye-letter.top-53 { top: 53%; } .eye-letter.top-54 { top: 54%; } .eye-letter.top-55 { top: 55%; } .eye-letter.top-56 { top: 56%; }
.eye-letter.top-57 { top: 57%; } .eye-letter.top-58 { top: 58%; } .eye-letter.top-59 { top: 59%; } .eye-letter.top-60 { top: 60%; }
.eye-letter.top-61 { top: 61%; } .eye-letter.top-62 { top: 62%; } .eye-letter.top-63 { top: 63%; } .eye-letter.top-64 { top: 64%; }
.eye-letter.top-65 { top: 65%; } .eye-letter.top-66 { top: 66%; } .eye-letter.top-67 { top: 67%; } .eye-letter.top-68 { top: 68%; }
.eye-letter.top-69 { top: 69%; } .eye-letter.top-70 { top: 70%; } .eye-letter.top-71 { top: 71%; } .eye-letter.top-72 { top: 72%; }
.eye-letter.top-73 { top: 73%; } .eye-letter.top-74 { top: 74%; } .eye-letter.top-75 { top: 75%; } .eye-letter.top-76 { top: 76%; }
.eye-letter.top-77 { top: 77%; } .eye-letter.top-78 { top: 78%; } .eye-letter.top-79 { top: 79%; } .eye-letter.top-80 { top: 80%; }
.eye-letter.top-81 { top: 81%; } .eye-letter.top-82 { top: 82%; } .eye-letter.top-83 { top: 83%; } .eye-letter.top-84 { top: 84%; }
.eye-letter.top-85 { top: 85%; } .eye-letter.top-86 { top: 86%; } .eye-letter.top-87 { top: 87%; } .eye-letter.top-88 { top: 88%; }
.eye-letter.top-89 { top: 89%; } .eye-letter.top-90 { top: 90%; } .eye-letter.top-91 { top: 91%; } .eye-letter.top-92 { top: 92%; }
.eye-letter.top-93 { top: 93%; } .eye-letter.top-94 { top: 94%; } .eye-letter.top-95 { top: 95%; } .eye-letter.top-96 { top: 96%; }
.eye-letter.top-97 { top: 97%; } .eye-letter.top-98 { top: 98%; }

/* ==================== TELEGRAM BOOKING BUTTON ==================== */
.tg-booking {
    position: fixed;
    bottom: 28px;
    right: 28px;
    z-index: 9999;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

/* Tooltip */
.tg-booking__tooltip {
    position: absolute;
    bottom: calc(100% + 12px);
    right: 0;
    background: #fff;
    color: #1a3c34;
    font-size: 14px;
    font-weight: 600;
    padding: 10px 16px;
    border-radius: 12px;
    box-shadow: 0 4px 24px rgba(0,0,0,0.12), 0 1px 4px rgba(0,0,0,0.08);
    white-space: nowrap;
    opacity: 0;
    transform: translateY(8px);
    animation: tg-tooltip-show 0.5s ease 2s forwards;
    pointer-events: none;
}

.tg-booking__tooltip::after {
    content: '';
    position: absolute;
    bottom: -6px;
    right: 24px;
    width: 12px;
    height: 12px;
    background: #fff;
    transform: rotate(45deg);
    border-radius: 2px;
}

@keyframes tg-tooltip-show {
    to { opacity: 1; transform: translateY(0); }
}

/* Main button */
.tg-booking__btn {
    display: flex;
    align-items: center;
    gap: 10px;
    background: linear-gradient(135deg, #2AABEE 0%, #229ED9 100%);
    color: #fff;
    border: none;
    border-radius: 50px;
    padding: 0 22px 0 18px;
    height: 56px;
    cursor: pointer;
    text-decoration: none;
    font-size: 15px;
    font-weight: 600;
    letter-spacing: 0.01em;
    box-shadow: 0 4px 16px rgba(42,171,238,0.35), 0 2px 6px rgba(0,0,0,0.1);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    animation: tg-pulse 2.5s ease-in-out infinite;
}

.tg-booking__btn:hover {
    transform: scale(1.05);
    box-shadow: 0 6px 28px rgba(42,171,238,0.5), 0 2px 8px rgba(0,0,0,0.12);
    animation: none;
}

.tg-booking__btn:active {
    transform: scale(0.97);
}

.tg-booking__btn svg,
.tg-booking__btn .tg-booking__max-icon {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
}

.tg-booking__btn .tg-booking__max-icon {
    object-fit: contain;
    display: block;
}

@keyframes tg-pulse {
    0%, 100% { box-shadow: 0 4px 16px rgba(42,171,238,0.35), 0 2px 6px rgba(0,0,0,0.1); }
    50% { box-shadow: 0 4px 24px rgba(42,171,238,0.55), 0 2px 8px rgba(0,0,0,0.12); }
}

/* Ping animation ring */
.tg-booking__ping {
    position: absolute;
    top: -4px;
    right: -4px;
    width: 14px;
    height: 14px;
}

.tg-booking__ping span {
    position: absolute;
    inset: 0;
    border-radius: 50%;
    background: #ff5c5c;
}

.tg-booking__ping span:first-child {
    animation: tg-ping 1.5s ease-out infinite;
    opacity: 0;
}

.tg-booking__ping span:last-child {
    width: 10px;
    height: 10px;
    top: 2px;
    right: 2px;
}

@keyframes tg-ping {
    0% { transform: scale(1); opacity: 0.7; }
    100% { transform: scale(2.2); opacity: 0; }
}

/* Mobile: icon only */
@media (max-width: 480px) {
    .tg-booking {
        bottom: 20px;
        right: 20px;
    }
    .tg-booking__btn {
        width: 56px;
        padding: 0;
        justify-content: center;
        border-radius: 50%;
    }
    .tg-booking__label {
        display: none;
    }
}